This is the 5932nd most frequent Portuguese word.
blues
A music genre characterized by melancholic melodies and themes, originating from African American traditions.
Here, 'blues' refers to the musical genre, a style originating in African-American communities characterized by its use of specific chord progressions and emotional expressiveness.
Eu gosto de ouvir músicas de blues à noite para relaxar.
I like to listen to blues music at night to relax.
'The blues' in this context denotes a feeling of sadness, melancholy, or emotional discomfort, derived from common usage in English and transferred into Portuguese.
Ele tem blues quando se sente nostálgico.
He has the blues when he feels nostalgic.
In this case, 'blues' is used to describe the category of musician or artist who specializes in performing music of the blues genre.